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�: r � <br /> ote ra size Df a requited�+ot+'�bustlon airopent�9.+s�fl��ed the Kaown Air . <br /> Directions-The Mj��t�r���°r co�rumtd�opo gb of step 4 is requfred tv be fltlec�o� <br /> Infittrotton Rai�e <br /> �wc apP�+�'�worxsneec e-i <br /> R�id�pal Combustlon Alt CHlculation MeU'oa <br /> for Fumace,Boller,and/or W��H� <br /> in Ute Same SPace� <br /> S�p L-Complete�nted combustion appiiance inf0�ation. ,nP� M� ��r <br /> (�i/ <br /> FurnacelBoller. ���t Vent <br /> p�ft Nood _Fan Assisted +– _ <br /> — arPowerVent ,�b U�� B�� <br /> WdtCrHe3ter. �p•,�Vent lnput:_ ' <br /> Draft Hood �8n A551sCed q!J�� _ {{3 <br /> �pntalRtng wmb+�on apP�ncps- J <br /> �– or Aawer Vent �r$n�S�Ce(tp5) �q$VOIUme: <br /> scep z caicmace me vowme o�cne Combv�cton aPP L w H <br /> The cAs Includes atl spaces cdnne�ea�one anothflr hY C�e�mPliant operiiflQS. <br /> LxWxH <br /> 54ep 3:Determine Air Changes P8r HOU�[A�)1 <br /> q� KA1R Method}. <br /> Defauk AGt1 va�ues have bee�1nt0�p0�t2d itlt0 T0b18 E-���e w���� i <br /> 14 the ear of consavct�°n or ACH ts not known,use meLhod�I�UN DlRECT VENT APPLWNCES) <br /> 5tep 4:Determine Requtred Volumeto�Gombustian A1r.(DO NOT <br /> 4a.Standard Mechod InpuG�–���t <br /> TotalBtu�nr inpue•of au eombusc�on apD ane <br /> �rav: <br /> Use Standard Method coiumn i�'�btie E-1 t0 flCtA Totai Re9u�T� a�n�d� <br /> Volume ISRV� TRvthen no outdoor openirsgs <br /> If GAS volume(kom SiBP 2)�j��d°�i na TRV then go to s'�5. <br /> If CA5 Volume(from steF 1 �.AppupNGFS) <br /> od DO NOT COUN7��RECT ,nP� .Q��tu/hr <br /> qb.Kno.m Air tnfiltration R3te(KA►R e���w�vent app�iances <br /> TotalBtulhrinputofa{14an-asSiit�d RVFA: ���� ftD <br /> USe Fan•1�Ssi5[ed Appliances ce�umn in Table E1 to 5nd <br /> QequfredVolumeFanAssisted+RVEa) � g}�Jhr <br /> Input:�.�–�----- <br /> ToWI BNihr input af atl fdatural dratt apAttanca � <br /> U52 NdiUidl dr'dft Apptiantes celumnances(RVNDA�find <br /> RVNFA:�.-----�� <br /> ReRu�red votume Natura►�can aPP ���5 = s��� �stv tt' <br /> RVPA RVNDA �– } <br /> + <br /> 1'ptai Requtred votume(TRV)= enin s are needed. <br /> if CAS Vo►ume Ifrom S�P 21 59eu�o���e go�t��� r op g <br /> ip CAS volume(from S P ? ✓ �� <br /> SieA 5:Calculate the ratlo of avafleble lnter►or vo1ume ro�8�o�5cep�b�tUm� ?��� � �6�S = <br /> Ratio=CAS Votume(from SteP 21 dh+td¢d bY�V(�m 5� Ratio= <br /> Step 6:Calculate ReduCtlOn Eaaor lRF1� RF=1- ��% ' � � � <br /> RF=1 minus�uo y� as if a���ombustion atir is from outside- 'nPut: /���yy� B��hr <br /> 5tep 7:Calculate�ing�e oucdoor ooen btiances�n t1'e 53me� <br /> /��`�--=— <br /> Ycm�etul�+�;nP+n of 21t CotnQuSU9n App <br /> (EXGEPT DIRECT VENT� �.��3 j� <br /> Combuscio�/+tr open�n 3��mf pet if1� <br /> CAOA= �6�� /3U00 Btu r er 1+i= <br /> Tota4 Biu/hr dhrided bY <br /> st�p�c Cafculate Minunum CAOA. �5.3Yx . 3� _ , � '"� �/ <br /> lled by RF Minimum�110A= �"'C" � <br /> MSnimum CAOA=CAOA multlp � � '' � <br /> � %J � <br /> SteQ 9:C31cu13[e COmhO5t10n Pdr Opentng Dlamecec(CAOD� ' in.�m�r <br /> b tha spuet2 ro0f o1 Mlnimum CAOA t1►OD=1.13 Y Mlntmum�+�A=–.�--- <br /> �p,Op e 1.13 mvlHplfed Y roeed in Sedlon <br /> �Q up one inch tn slze if usingNex dud <br /> Inety u5ing ASHRAE caltutation or trlower do°T t�-Fotlow P <br /> i►f d�str�d,ACH can he detern► <br /> G304. <br /> Page 5 of 6 <br /> ��a� � � �� �o�s- o��s <br />